:root{--accent: #2b8aef;--muted: #666;--light-gray: #f0f2f5;--border: #e0e0e0}body{font-family:Inter,Segoe UI,Roboto,Arial;margin:0;padding:20px;background:#f7f9fc;color:#111}.container{max-width:760px;margin:0 auto;background:#fff;padding:24px;border-radius:8px;box-shadow:0 6px 18px #1414140f}h1{margin-top:0}h2{margin-top:0;color:#333}.nav-buttons{display:flex;gap:16px;margin-top:20px}.nav-buttons button{background:var(--accent);color:#fff;padding:12px 24px;border:0;border-radius:6px;cursor:pointer;font-size:16px;font-weight:500;transition:background .2s}.nav-buttons button:hover{background:#1a73e8}.nav-back{margin-bottom:20px}.nav-back button{background:transparent;color:var(--accent);padding:8px 16px;border:1px solid var(--accent);border-radius:6px;cursor:pointer;font-size:14px;transition:all .2s}.nav-back button:hover{background:var(--light-gray)}.home{text-align:center;padding:40px 0}.home h2{margin-bottom:30px}.product-form label{display:block;margin:12px 0 6px;font-weight:600}.product-form input[type=text],.product-form input[type=number],.product-form textarea,.product-form select{width:100%;padding:8px;border:1px solid #ddd;border-radius:4px}.product-form textarea{min-height:80px}.hint{font-size:12px;color:var(--muted);margin-top:6px}.product-form button{margin-top:14px;background:var(--accent);color:#fff;padding:10px 16px;border:0;border-radius:6px;cursor:pointer}.product-form button:disabled{opacity:.6}.previews{display:flex;gap:8px;margin-top:8px}.previews img{width:80px;height:80px;object-fit:cover;border-radius:6px;border:1px solid #eee}.robot-list{margin-top:20px}.robot-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px;margin-top:20px}.robot-card{border:1px solid var(--border);border-radius:8px;padding:16px;background:#f9f9f9;transition:box-shadow .2s}.robot-card:hover{box-shadow:0 4px 12px #0000001a}.robot-card h3{margin-top:0;margin-bottom:12px;color:#333}.robot-card p{margin:6px 0;font-size:14px;color:#555}.loading,.error{padding:40px 0;text-align:center}.error{color:#d32f2f}.msg{margin-top:12px;padding:10px;border-radius:6px}.msg.err{background:#ffefef;color:#900}.msg.ok{background:#eefef6;color:#075}